Sectional steam-boiler.



No. 720,205. PATENTED FEB.10,190'3.

P. WIEDENFELD. SEGTIONAL STEAM BOILER.

APPLICATION FILED SEPT. 9, 1902.

x0 MODEL.

UNITED STATE PATENT OFFICE.

PETER WIEDENFELD, OF DUISBURG, GERMANY.

SECTIONAL STEAM-BOILER.

SPECIFICATION formingpart of Letters Patent No. 720,205, dated February10, 1903.

Application filed September 9,1902. Serial No. 122,643. (No model.)

T (LZZ whom it may concern.-

Be it known that I, PETER WIEDENFELD, a citizen of Germany, and aresident of Duisburg, Germany, have invented certain new and usefulImprovementsin Sectional Steam- Boilers, of which the following is aspecification.

This invention relates to a sectional boiler of novel construction andin which a superior 1o generation of steam-is obtained.

In the accompanying drawings, Figure 1 is a cross-section of my improvedboiler on line O-D, Fig. 2; Fig. 2, a longitudinal section thereof online A-B, Fig. 1; Fig. 3, a front view, and Fig. 4 a horizontal sectionon line E-F, Fig. 2.

The boiler is composed of asuitablenumber of sections arranged side byside and each consisting of a chamber b and three 2: tubes 1" 1" 1",depending from and communicating with said chamber. The central tube 1*is preferably of oval cross-section and communicates with the side tubes7" by means of a box It. .The chambers b, as well as the boxes 7c,communicate with each other by pipes t and s, respectively. Through thepipes tthe steam contained in the several chambers b escapes to thetake-0E pipe 01.. The latter is also connected to the lower end of theforemost chamber 1) below the water-level and may be provided with awatergage. The two spaces intermediate the center tubes '1' and theouter tubes 1 contain each a grate d. In this way two separatefire-boxes are formed, which may be alternately charged, so that auniform production of steam is effected. The outer tubes 7" areconnected with each other by means of partitions p in order to close theopenings between the tubes. The heating gases rise in the spaces betweenthe tubes 4' 40 and r and escape laterally between the several chambersb, from where they descend between tubes 1" and jacketm to the chimney.

By my invention the durability of the boiler is increased, and itsseveral parts may be easily replaced when necessary.

What I claim is- A sectional steam-boiler composed of a seriesofcommunicating chambers, a pair of outer tubes and an inner tubedepending from each chamber, boxes for connecting the tubes, means forconnecting the boxes, and grates arranged between the inner tubes andthe outer tubes, substantially as specified.

Signed by me at Dusseldorf, Germany, this 5 5 28th day of August, 1902.

PETER WIEDENFELD. Witnesses:

WILLIAM. ESSENWEIN, PETER LIEBER.

